

<!DOCTYPE html>
<html lang="zh-CN" data-default-color-scheme=auto>



<head>
  <meta charset="UTF-8">
  <link rel="apple-touch-icon" sizes="76x76" href="/blog/img/favicon.png">
  <link rel="icon" href="/blog/img/favicon.png">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0, shrink-to-fit=no">
  <meta http-equiv="x-ua-compatible" content="ie=edge">
  
  <meta name="theme-color" content="#2f4154">
  <meta name="author" content="扬言">
  <meta name="keywords" content="">
  
    <meta name="description" content="很多人应该写过移动端的分页逻辑吧，上拉加载更多，就是传page+1然后把结果和之前的数据合并，虽然不是很复杂，但是也是要维护几个state，如data（数据），params（参数），isConcat（是否合并），isLoading（是否加载中），isLoad（是否加载完所有数据）。代码便会变的难以维护，用自定义hook就可以很轻松的解决。 12345678910111213141516171819">
<meta property="og:type" content="article">
<meta property="og:title" content="移动端分页hook">
<meta property="og:url" content="http://yan_yin.gitee.io/blog/2023/06/21/page-hook/index.html">
<meta property="og:site_name" content="yain&#39;blog">
<meta property="og:description" content="很多人应该写过移动端的分页逻辑吧，上拉加载更多，就是传page+1然后把结果和之前的数据合并，虽然不是很复杂，但是也是要维护几个state，如data（数据），params（参数），isConcat（是否合并），isLoading（是否加载中），isLoad（是否加载完所有数据）。代码便会变的难以维护，用自定义hook就可以很轻松的解决。 12345678910111213141516171819">
<meta property="og:locale" content="zh_CN">
<meta property="article:published_time" content="2023-06-21T04:28:10.000Z">
<meta property="article:modified_time" content="2023-07-11T06:08:24.323Z">
<meta property="article:author" content="扬言">
<meta property="article:tag" content="Hooks">
<meta name="twitter:card" content="summary_large_image">
  
  
    <meta name="referrer" content="no-referrer-when-downgrade">
  
  
  <title>移动端分页hook - yain&#39;blog</title>

  <link  rel="stylesheet" href="https://lib.baomitu.com/twitter-bootstrap/4.6.1/css/bootstrap.min.css" />



  <link  rel="stylesheet" href="https://lib.baomitu.com/github-markdown-css/4.0.0/github-markdown.min.css" />

  <link  rel="stylesheet" href="https://lib.baomitu.com/hint.css/2.7.0/hint.min.css" />

  <link  rel="stylesheet" href="https://lib.baomitu.com/fancybox/3.5.7/jquery.fancybox.min.css" />



<!-- 主题依赖的图标库，不要自行修改 -->
<!-- Do not modify the link that theme dependent icons -->

<link rel="stylesheet" href="//at.alicdn.com/t/font_1749284_hj8rtnfg7um.css">



<link rel="stylesheet" href="//at.alicdn.com/t/font_1736178_lbnruvf0jn.css">


<link  rel="stylesheet" href="/blog/css/main.css" />


  <link id="highlight-css" rel="stylesheet" href="/blog/css/highlight.css" />
  
    <link id="highlight-css-dark" rel="stylesheet" href="/blog/css/highlight-dark.css" />
  




  <script id="fluid-configs">
    var Fluid = window.Fluid || {};
    Fluid.ctx = Object.assign({}, Fluid.ctx)
    var CONFIG = {"hostname":"yan_yin.gitee.io","root":"/blog/","version":"1.9.5-a","typing":{"enable":true,"typeSpeed":70,"cursorChar":"_","loop":false,"scope":[]},"anchorjs":{"enable":true,"element":"h1,h2,h3,h4,h5,h6","placement":"left","visible":"hover","icon":""},"progressbar":{"enable":true,"height_px":3,"color":"#29d","options":{"showSpinner":false,"trickleSpeed":100}},"code_language":{"enable":true,"default":"TEXT"},"copy_btn":true,"image_caption":{"enable":true},"image_zoom":{"enable":true,"img_url_replace":["",""]},"toc":{"enable":true,"placement":"right","headingSelector":"h1,h2,h3,h4,h5,h6","collapseDepth":0},"lazyload":{"enable":true,"loading_img":"/img/loading.gif","onlypost":false,"offset_factor":2},"web_analytics":{"enable":false,"follow_dnt":true,"baidu":null,"google":{"measurement_id":null},"tencent":{"sid":null,"cid":null},"woyaola":null,"cnzz":null,"leancloud":{"app_id":null,"app_key":null,"server_url":null,"path":"window.location.pathname","ignore_local":false}},"search_path":"/blog/local-search.xml","include_content_in_search":true};

    if (CONFIG.web_analytics.follow_dnt) {
      var dntVal = navigator.doNotTrack || window.doNotTrack || navigator.msDoNotTrack;
      Fluid.ctx.dnt = dntVal && (dntVal.startsWith('1') || dntVal.startsWith('yes') || dntVal.startsWith('on'));
    }
  </script>
  <script  src="/blog/js/utils.js" ></script>
  <script  src="/blog/js/color-schema.js" ></script>
  


  
<meta name="generator" content="Hexo 6.3.0"></head>


<body>
  

  <header>
    

<div class="header-inner" style="height: 70vh;">
  <nav id="navbar" class="navbar fixed-top  navbar-expand-lg navbar-dark scrolling-navbar">
  <div class="container">
    <a class="navbar-brand" href="/blog/">
      <strong>Yain&#39;Blog</strong>
    </a>

    <button id="navbar-toggler-btn" class="navbar-toggler" type="button" data-toggle="collapse"
            data-target="#navbarSupportedContent"
            aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
      <div class="animated-icon"><span></span><span></span><span></span></div>
    </button>

    <!-- Collapsible content -->
    <div class="collapse navbar-collapse" id="navbarSupportedContent">
      <ul class="navbar-nav ml-auto text-center">
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/blog/">
                <i class="iconfont icon-home-fill"></i>
                <span>首页</span>
              </a>
            </li>
          
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/blog/archives/">
                <i class="iconfont icon-archive-fill"></i>
                <span>归档</span>
              </a>
            </li>
          
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/blog/categories/">
                <i class="iconfont icon-category-fill"></i>
                <span>分类</span>
              </a>
            </li>
          
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/blog/tags/">
                <i class="iconfont icon-tags-fill"></i>
                <span>标签</span>
              </a>
            </li>
          
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/blog/about/">
                <i class="iconfont icon-user-fill"></i>
                <span>关于</span>
              </a>
            </li>
          
        
        
          <li class="nav-item" id="search-btn">
            <a class="nav-link" target="_self" href="javascript:;" data-toggle="modal" data-target="#modalSearch" aria-label="Search">
              <i class="iconfont icon-search"></i>
            </a>
          </li>
          
        
        
          <li class="nav-item" id="color-toggle-btn">
            <a class="nav-link" target="_self" href="javascript:;" aria-label="Color Toggle">
              <i class="iconfont icon-dark" id="color-toggle-icon"></i>
            </a>
          </li>
        
      </ul>
    </div>
  </div>
</nav>

  

<div id="banner" class="banner" parallax=true
     style="background: url('/blog/img/default.png') no-repeat center center; background-size: cover;">
  <div class="full-bg-img">
    <div class="mask flex-center" style="background-color: rgba(0, 0, 0, 0.3)">
      <div class="banner-text text-center fade-in-up">
        <div class="h2">
          
            <span id="subtitle" data-typed-text="移动端分页hook"></span>
          
        </div>

        
          
  <div class="mt-3">
    
    
      <span class="post-meta">
        <i class="iconfont icon-date-fill" aria-hidden="true"></i>
        <time datetime="2023-06-21 12:28" pubdate>
          2023年6月21日 中午
        </time>
      </span>
    
  </div>

  <div class="mt-1">
    
      <span class="post-meta mr-2">
        <i class="iconfont icon-chart"></i>
        
          2.9k 字
        
      </span>
    

    
      <span class="post-meta mr-2">
        <i class="iconfont icon-clock-fill"></i>
        
        
        
          24 分钟
        
      </span>
    

    
    
  </div>


        
      </div>

      
    </div>
  </div>
</div>

</div>

  </header>

  <main>
    
      

<div class="container-fluid nopadding-x">
  <div class="row nomargin-x">
    <div class="side-col d-none d-lg-block col-lg-2">
      

    </div>

    <div class="col-lg-8 nopadding-x-md">
      <div class="container nopadding-x-md" id="board-ctn">
        <div id="board">
          <article class="post-content mx-auto">
            <h1 id="seo-header">移动端分页hook</h1>
            
            
              <div class="markdown-body">
                
                <p>很多人应该写过移动端的分页逻辑吧，上拉加载更多，就是传page+1然后把结果和之前的数据合并，虽然不是很复杂，但是也是要维护几个state，如data（数据），params（参数），isConcat（是否合并），isLoading（是否加载中），isLoad（是否加载完所有数据）。代码便会变的难以维护，用自定义hook就可以很轻松的解决。</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br></pre></td><td class="code"><pre><code class="hljs js"><span class="hljs-comment">/*</span><br><span class="hljs-comment"> * @Description:</span><br><span class="hljs-comment"> * @Author: yain</span><br><span class="hljs-comment"> * @Date: 2023-03-15</span><br><span class="hljs-comment"> * @LastEditTime: 2023-03-15</span><br><span class="hljs-comment"> * @LastEditors: Please set LastEditors</span><br><span class="hljs-comment"> */</span><br><span class="hljs-keyword">import</span> <span class="hljs-title class_">React</span>, &#123; useEffect, useState, useMemo &#125; <span class="hljs-keyword">from</span> <span class="hljs-string">&quot;react&quot;</span>;<br><br><span class="hljs-comment">/**</span><br><span class="hljs-comment"> * <span class="hljs-doctag">@func</span> <span class="hljs-variable">usePageData</span></span><br><span class="hljs-comment"> * <span class="hljs-doctag">@desc</span>  具体的字段名可以根据后端修改</span><br><span class="hljs-comment"> * <span class="hljs-doctag">@param</span> &#123;<span class="hljs-type">api</span>&#125;  后端请求方法</span><br><span class="hljs-comment"> * <span class="hljs-doctag">@param</span> &#123;<span class="hljs-type">initParams</span>&#125;  初始参数</span><br><span class="hljs-comment"> * <span class="hljs-doctag">@return</span> &#123;<span class="hljs-type"></span></span><br><span class="hljs-type"><span class="hljs-comment"> * content：  列表数据</span></span><br><span class="hljs-type"><span class="hljs-comment"> * totalElements： 总数</span></span><br><span class="hljs-type"><span class="hljs-comment"> * isLoad: 是否加载完</span></span><br><span class="hljs-type"><span class="hljs-comment"> * getNextPageData: 获取下一页并合并后的数据</span></span><br><span class="hljs-type"><span class="hljs-comment"> * getFilterData: 获取传入筛选项的数据</span></span><br><span class="hljs-type"><span class="hljs-comment"> * refresh: 完全恢复初始</span></span><br><span class="hljs-type"><span class="hljs-comment"> * loading： 是否加载中  项目中暂时不用这个后续看是否加</span></span><br><span class="hljs-type"><span class="hljs-comment"> * </span>&#125;</span><br><span class="hljs-comment"> */</span><br><br><span class="hljs-keyword">export</span> <span class="hljs-keyword">const</span> <span class="hljs-title function_">usePageData</span> = (<span class="hljs-params">&#123; api, initParams = &#123;&#125; &#125;</span>) =&gt; &#123;<br>  <span class="hljs-keyword">const</span> [res, setRes] = <span class="hljs-title function_">useState</span>(&#123;<br>    <span class="hljs-attr">content</span>: [],<br>  &#125;);<br>  <span class="hljs-keyword">const</span> [isLoad, setIsLoad] = <span class="hljs-title function_">useState</span>(<span class="hljs-literal">false</span>)<br>  <span class="hljs-keyword">const</span> [params, setParams] = <span class="hljs-title function_">useState</span>(&#123;<br>    <span class="hljs-attr">isConcat</span>: <span class="hljs-literal">true</span>, <span class="hljs-comment">// 是否合并之前的数据  如果getFilterData或者refresh 都要重置content</span><br>    <span class="hljs-attr">page</span>: <span class="hljs-number">0</span>,<br>    <span class="hljs-attr">pageSize</span>: <span class="hljs-number">10</span>,<br>    ...initParams<br>  &#125;);<br>  <span class="hljs-comment">//请求数据</span><br>  <span class="hljs-keyword">const</span> <span class="hljs-title function_">fetchData</span> = <span class="hljs-keyword">async</span> (<span class="hljs-params">isConcat?</span>) =&gt; &#123;<br>    <span class="hljs-keyword">if</span> (isLoad &amp;&amp; isConcat) <span class="hljs-keyword">return</span>;<br>    <span class="hljs-keyword">const</span> &#123; content, last &#125; = <span class="hljs-keyword">await</span> <span class="hljs-title function_">api</span>(&#123;<br>       ...params, <span class="hljs-attr">isConcat</span>: <span class="hljs-literal">undefined</span> <br>    &#125;);<br>    <span class="hljs-title function_">setIsLoad</span>(last)<br>    <span class="hljs-keyword">if</span> (isConcat) &#123;<br>      <span class="hljs-title function_">setRes</span>(<span class="hljs-function"><span class="hljs-params">pre</span> =&gt;</span> (&#123; ...pre, <span class="hljs-attr">content</span>: pre.<span class="hljs-property">content</span>.<span class="hljs-title function_">concat</span>(content) &#125;));<br>    &#125; <span class="hljs-keyword">else</span> &#123;<br>      <span class="hljs-title function_">setRes</span>(&#123;<br>        content<br>      &#125;);<br>    &#125;<br>  &#125;;<br><br>  <span class="hljs-keyword">const</span> <span class="hljs-title function_">getNextPageData</span> = (<span class="hljs-params"></span>) =&gt; &#123;<br>    <span class="hljs-title function_">setParams</span>(<span class="hljs-function"><span class="hljs-params">pre</span> =&gt;</span> (&#123; ...pre, <span class="hljs-attr">page</span>: pre.<span class="hljs-property">page</span> + <span class="hljs-number">1</span>, <span class="hljs-attr">isConcat</span>: <span class="hljs-literal">true</span> &#125;));<br>  &#125;;<br><br>  <span class="hljs-comment">//  调用重置页码</span><br>  <span class="hljs-keyword">const</span> <span class="hljs-title function_">getFilterData</span> = otherParams =&gt; &#123;<br>    <span class="hljs-title function_">setParams</span>(<span class="hljs-function"><span class="hljs-params">pre</span> =&gt;</span> (&#123;<br>      ...pre, <span class="hljs-comment">//如果有多个下拉筛选项  筛选第二个可以保证之前的筛选不被丢失</span><br>      <span class="hljs-attr">isConcat</span>: <span class="hljs-literal">false</span>,<br>      <span class="hljs-attr">page</span>: <span class="hljs-number">0</span>,<br>      <span class="hljs-attr">pageSize</span>: <span class="hljs-number">10</span>,<br>      ...otherParams <span class="hljs-comment">// 添加额外的筛选</span><br>    &#125;));<br>  &#125;;<br><br>  <span class="hljs-keyword">const</span> <span class="hljs-title function_">refresh</span> = (<span class="hljs-params"></span>) =&gt; &#123;<br>    <span class="hljs-title function_">setParams</span>(&#123;<br>      <span class="hljs-attr">isConcat</span>: <span class="hljs-literal">false</span>,<br>      <span class="hljs-attr">page</span>: <span class="hljs-number">0</span>,<br>      <span class="hljs-attr">pageSize</span>: <span class="hljs-number">10</span>,<br>      ...initParams<br>    &#125;);<br>  &#125;;<br><br>  <span class="hljs-title function_">useEffect</span>(<span class="hljs-function">() =&gt;</span> &#123;<br>    <span class="hljs-title function_">fetchData</span>(params.<span class="hljs-property">isConcat</span>);<br>  &#125;, [params]);<br>  <span class="hljs-keyword">return</span> &#123;<br>    ...res,<br>    isLoad,<br>    getNextPageData,<br>    getFilterData,<br>    refresh<br>  &#125;;<br>&#125;;<br></code></pre></td></tr></table></figure>


<p>使用时<code>当然可能有很多需要优化的也敬请指出</code> </p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br></pre></td><td class="code"><pre><code class="hljs js"><span class="hljs-keyword">import</span> <span class="hljs-title class_">Taro</span>, &#123; stopPullDownRefresh &#125; <span class="hljs-keyword">from</span> <span class="hljs-string">&quot;@tarojs/taro&quot;</span>;<br><span class="hljs-keyword">import</span> <span class="hljs-title class_">React</span>, &#123; useEffect, useState &#125; <span class="hljs-keyword">from</span> <span class="hljs-string">&quot;react&quot;</span>;<br><span class="hljs-keyword">import</span> &#123; <span class="hljs-title class_">View</span> &#125; <span class="hljs-keyword">from</span> <span class="hljs-string">&quot;@tarojs/components&quot;</span>;<br><span class="hljs-keyword">import</span> &#123; usePageData &#125; <span class="hljs-keyword">from</span> <span class="hljs-string">&quot;@/utils/hooks&quot;</span>;<br><br><span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> () =&gt; &#123;<br><br>  <span class="hljs-keyword">const</span> &#123; content, getNextPageData, getFilterData &#125; = <span class="hljs-title function_">usePageData</span>(&#123;<br>    <span class="hljs-attr">api</span>: xxx,<br>    <span class="hljs-attr">initParams</span>: &#123;<span class="hljs-attr">xxx</span>:xxx&#125;<br>  &#125;);<br><br><span class="hljs-comment">// 点击getNextPageData触发  模拟上拉加载</span><br>  <span class="hljs-keyword">return</span> (<br>    <span class="language-xml"><span class="hljs-tag">&lt;<span class="hljs-name">View</span>&gt;</span></span><br><span class="language-xml">      <span class="hljs-tag">&lt;<span class="hljs-name">View</span> &gt;</span></span><br><span class="language-xml">        <span class="hljs-tag">&lt;<span class="hljs-name">View</span> <span class="hljs-attr">onClick</span>=<span class="hljs-string">&#123;()</span> =&gt;</span> getFilterData(&#123; taskType: &quot;PATROL&quot; &#125;)&#125;&gt;测试<span class="hljs-tag">&lt;/<span class="hljs-name">View</span>&gt;</span></span><br><span class="language-xml">        <span class="hljs-tag">&lt;<span class="hljs-name">View</span> <span class="hljs-attr">onClick</span>=<span class="hljs-string">&#123;()</span> =&gt;</span> getFilterData(&#123; time: &quot;MAINTENANCE&quot; &#125;)&#125;&gt;</span><br><span class="language-xml">          测试2</span><br><span class="language-xml">        <span class="hljs-tag">&lt;/<span class="hljs-name">View</span>&gt;</span></span><br><span class="language-xml">        <span class="hljs-tag">&lt;<span class="hljs-name">View</span> <span class="hljs-attr">onClick</span>=<span class="hljs-string">&#123;getNextPageData&#125;</span>&gt;</span></span><br><span class="language-xml">          &#123;content.map((item) =&gt; (</span><br><span class="language-xml">            <span class="hljs-tag">&lt;<span class="hljs-name">View</span>&gt;</span>&#123;item.name&#125;<span class="hljs-tag">&lt;/<span class="hljs-name">View</span>&gt;</span></span><br><span class="language-xml">          ))&#125;</span><br><span class="language-xml">        <span class="hljs-tag">&lt;/<span class="hljs-name">View</span>&gt;</span></span><br><span class="language-xml">      <span class="hljs-tag">&lt;/<span class="hljs-name">View</span>&gt;</span></span><br><span class="language-xml">    <span class="hljs-tag">&lt;/<span class="hljs-name">View</span>&gt;</span></span><br>  );<br>&#125;;<br></code></pre></td></tr></table></figure>

                
              </div>
            
            <hr/>
            <div>
              <div class="post-metas my-3">
  
    <div class="post-meta mr-3 d-flex align-items-center">
      <i class="iconfont icon-category"></i>
      

<span class="category-chains">
  
  
    
      <span class="category-chain">
        
  <a href="/blog/categories/React/" class="category-chain-item">React</a>
  
  

      </span>
    
  
</span>

    </div>
  
  
    <div class="post-meta">
      <i class="iconfont icon-tags"></i>
      
        <a href="/blog/tags/Hooks/" class="print-no-link">#Hooks</a>
      
    </div>
  
</div>


              
  

  <div class="license-box my-3">
    <div class="license-title">
      <div>移动端分页hook</div>
      <div>http://yan_yin.gitee.io/blog/2023/06/21/page-hook/</div>
    </div>
    <div class="license-meta">
      
        <div class="license-meta-item">
          <div>作者</div>
          <div>扬言</div>
        </div>
      
      
        <div class="license-meta-item license-meta-date">
          <div>发布于</div>
          <div>2023年6月21日</div>
        </div>
      
      
      
        <div class="license-meta-item">
          <div>许可协议</div>
          <div>
            
              
              
                <a class="print-no-link" target="_blank" href="https://creativecommons.org/licenses/by/4.0/">
                  <span class="hint--top hint--rounded" aria-label="BY - 署名">
                    <i class="iconfont icon-by"></i>
                  </span>
                </a>
              
            
          </div>
        </div>
      
    </div>
    <div class="license-icon iconfont"></div>
  </div>



              
                <div class="post-prevnext my-3">
                  <article class="post-prev col-6">
                    
                    
                      <a href="/blog/2023/07/01/submit-form/" title="前端上传文件失败后如何再次上传流(不点击手动上传)">
                        <i class="iconfont icon-arrowleft"></i>
                        <span class="hidden-mobile">前端上传文件失败后如何再次上传流(不点击手动上传)</span>
                        <span class="visible-mobile">上一篇</span>
                      </a>
                    
                  </article>
                  <article class="post-next col-6">
                    
                    
                      <a href="/blog/2023/06/18/setState-diff/" title="useState(setState)和this.setState区别">
                        <span class="hidden-mobile">useState(setState)和this.setState区别</span>
                        <span class="visible-mobile">下一篇</span>
                        <i class="iconfont icon-arrowright"></i>
                      </a>
                    
                  </article>
                </div>
              
            </div>

            
          </article>
        </div>
      </div>
    </div>

    <div class="side-col d-none d-lg-block col-lg-2">
      
  <aside class="sidebar" style="margin-left: -1rem">
    <div id="toc">
  <p class="toc-header">
    <i class="iconfont icon-list"></i>
    <span>目录</span>
  </p>
  <div class="toc-body" id="toc-body"></div>
</div>



  </aside>


    </div>
  </div>
</div>





  



  



  



  



  







    

    
      <a id="scroll-top-button" aria-label="TOP" href="#" role="button">
        <i class="iconfont icon-arrowup" aria-hidden="true"></i>
      </a>
    

    
      <div class="modal fade" id="modalSearch" tabindex="-1" role="dialog" aria-labelledby="ModalLabel"
     aria-hidden="true">
  <div class="modal-dialog modal-dialog-scrollable modal-lg" role="document">
    <div class="modal-content">
      <div class="modal-header text-center">
        <h4 class="modal-title w-100 font-weight-bold">搜索</h4>
        <button type="button" id="local-search-close" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body mx-3">
        <div class="md-form mb-5">
          <input type="text" id="local-search-input" class="form-control validate">
          <label data-error="x" data-success="v" for="local-search-input">关键词</label>
        </div>
        <div class="list-group" id="local-search-result"></div>
      </div>
    </div>
  </div>
</div>

    

    
  </main>

  <footer>
    <div class="footer-inner">
  
    <div class="footer-content">
       <a href="" target="_blank" rel="nofollow noopener"><span>Y</span></a> <i class="iconfont icon-love"></i> <a href="" target="_blank" rel="nofollow noopener"><span>Z</span></a> 
    </div>
  
  
    <div class="statistics">
  
  

  
    
      <span id="busuanzi_container_site_pv" style="display: none">
        总访问量 
        <span id="busuanzi_value_site_pv"></span>
         次
      </span>
    
    
      <span id="busuanzi_container_site_uv" style="display: none">
        总访客数 
        <span id="busuanzi_value_site_uv"></span>
         人
      </span>
    
    
  
</div>

  
  
    <!-- 备案信息 ICP for China -->
    <div class="beian">
  <span>
    <a href="http://beian.miit.gov.cn/" target="_blank" rel="nofollow noopener">
      川ICP备19990130号-1
    </a>
  </span>
  
</div>

  
  
</div>

  </footer>

  <!-- Scripts -->
  
  <script  src="https://lib.baomitu.com/nprogress/0.2.0/nprogress.min.js" ></script>
  <link  rel="stylesheet" href="https://lib.baomitu.com/nprogress/0.2.0/nprogress.min.css" />

  <script>
    NProgress.configure({"showSpinner":false,"trickleSpeed":100})
    NProgress.start()
    window.addEventListener('load', function() {
      NProgress.done();
    })
  </script>


<script  src="https://lib.baomitu.com/jquery/3.6.4/jquery.min.js" ></script>
<script  src="https://lib.baomitu.com/twitter-bootstrap/4.6.1/js/bootstrap.min.js" ></script>
<script  src="/blog/js/events.js" ></script>
<script  src="/blog/js/plugins.js" ></script>


  <script  src="https://lib.baomitu.com/typed.js/2.0.12/typed.min.js" ></script>
  <script>
    (function (window, document) {
      var typing = Fluid.plugins.typing;
      var subtitle = document.getElementById('subtitle');
      if (!subtitle || !typing) {
        return;
      }
      var text = subtitle.getAttribute('data-typed-text');
      
        typing(text);
      
    })(window, document);
  </script>




  
    <script  src="/blog/js/img-lazyload.js" ></script>
  




  
<script>
  Fluid.utils.createScript('https://lib.baomitu.com/tocbot/4.20.1/tocbot.min.js', function() {
    var toc = jQuery('#toc');
    if (toc.length === 0 || !window.tocbot) { return; }
    var boardCtn = jQuery('#board-ctn');
    var boardTop = boardCtn.offset().top;

    window.tocbot.init(Object.assign({
      tocSelector     : '#toc-body',
      contentSelector : '.markdown-body',
      linkClass       : 'tocbot-link',
      activeLinkClass : 'tocbot-active-link',
      listClass       : 'tocbot-list',
      isCollapsedClass: 'tocbot-is-collapsed',
      collapsibleClass: 'tocbot-is-collapsible',
      scrollSmooth    : true,
      includeTitleTags: true,
      headingsOffset  : -boardTop,
    }, CONFIG.toc));
    if (toc.find('.toc-list-item').length > 0) {
      toc.css('visibility', 'visible');
    }

    Fluid.events.registerRefreshCallback(function() {
      if ('tocbot' in window) {
        tocbot.refresh();
        var toc = jQuery('#toc');
        if (toc.length === 0 || !tocbot) {
          return;
        }
        if (toc.find('.toc-list-item').length > 0) {
          toc.css('visibility', 'visible');
        }
      }
    });
  });
</script>


  <script src=https://lib.baomitu.com/clipboard.js/2.0.11/clipboard.min.js></script>

  <script>Fluid.plugins.codeWidget();</script>


  
<script>
  Fluid.utils.createScript('https://lib.baomitu.com/anchor-js/4.3.1/anchor.min.js', function() {
    window.anchors.options = {
      placement: CONFIG.anchorjs.placement,
      visible  : CONFIG.anchorjs.visible
    };
    if (CONFIG.anchorjs.icon) {
      window.anchors.options.icon = CONFIG.anchorjs.icon;
    }
    var el = (CONFIG.anchorjs.element || 'h1,h2,h3,h4,h5,h6').split(',');
    var res = [];
    for (var item of el) {
      res.push('.markdown-body > ' + item.trim());
    }
    if (CONFIG.anchorjs.placement === 'left') {
      window.anchors.options.class = 'anchorjs-link-left';
    }
    window.anchors.add(res.join(', '));

    Fluid.events.registerRefreshCallback(function() {
      if ('anchors' in window) {
        anchors.removeAll();
        var el = (CONFIG.anchorjs.element || 'h1,h2,h3,h4,h5,h6').split(',');
        var res = [];
        for (var item of el) {
          res.push('.markdown-body > ' + item.trim());
        }
        if (CONFIG.anchorjs.placement === 'left') {
          anchors.options.class = 'anchorjs-link-left';
        }
        anchors.add(res.join(', '));
      }
    });
  });
</script>


  
<script>
  Fluid.utils.createScript('https://lib.baomitu.com/fancybox/3.5.7/jquery.fancybox.min.js', function() {
    Fluid.plugins.fancyBox();
  });
</script>


  <script>Fluid.plugins.imageCaption();</script>

  <script  src="/blog/js/local-search.js" ></script>

  <script defer src="https://busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js" ></script>





<!-- 主题的启动项，将它保持在最底部 -->
<!-- the boot of the theme, keep it at the bottom -->
<script  src="/blog/js/boot.js" ></script>


  

  <noscript>
    <div class="noscript-warning">博客在允许 JavaScript 运行的环境下浏览效果更佳</div>
  </noscript>
</body>
</html>
